Entertainment on the riverfront stage, arts and crafts, pageant, midway rides and plenty of festival food. Columbus Greek Festival - Columbus, OH - Sep 1 to Sep 4, 2017 Live Greek for a weekend at this 44th annual event. Adult admission is and is good for the entire weekend. Liberty Home Association Oktoberfest - Hamilton, OH - Sep 1 to Sep 3, 2017 Admission is with children under 14 free.